Race Face components are the result of Race Face's efforts to produce the most stable, lightest and best-looking bike components in the world. The company motto "Inspired by Riders", shows how much Race Face itself loves biking.The employees of Race Face know what they want, and with more than 15 years of experience, they also know a lot about the development of precision components. The engineers take an uncompromising approach to component concepts, because the goal is to leave the competition wondering behind Race Face - no matter what discipline it is. Whether you prefer road or off-road riding, cross-country adventures or huge jumps, Race Face's range combines superior technologies with innovative concepts and the famous Race Face design.Race Face designers are constantly working to unearth the highest quality materials to create innovative technical products that allow you to fully experience and enjoy your bike adventures. During the design process, the designers always think about the most important contact points between rider and bike: the buttocks, the feet and of course the hands. Race Face products are fully designed with you, the biker, in mind.Race Face has updated its chainrings and increased the spacing between each tooth. The chainrings are still robust enough for downhillers, freeriders and dirt jumpers but also in a weight class where they are attractive for XC riders. The new models have been successfully tested by Race Face in some of the toughest terrains in the world. - Details: - Weight between 37g to 57g (36z 50g) - Can also be used with Rohloff hubs - Material specifications: 7075 T6 aluminium - Range of use: MTB rear derailleur - Rear derailleur speeds: 10-speed - Front derailleur speeds: 1-speed Chainrings - Mounting / Number of holes: 4 bolts - Bolt circle: 104 mm